%%--------------------------------------------------------------------
%% Copyright (c) 2016-2017 Feng Lee <feng@emqtt.io>. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%--------------------------------------------------------------------

-module(emq_coap_sup).

-author("Feng Lee <feng@emqtt.io>").

-behaviour(supervisor).

-export([start_link/1, init/1]).

-define(CHILD(M), {M, {M, start_link, []}, permanent, 5000, worker, [M]}).

start_link(Listener) ->
    supervisor:start_link({local, ?MODULE}, ?MODULE, [Listener]).

init([Listener]) ->
    ChSup = {emq_coap_channel_sup,
             {emq_coap_channel_sup, start_link, []},
              permanent, infinity, supervisor, [emq_coap_channel_sup]},
    ChMFA = {emq_coap_channel_sup, start_channel, []},
    {ok, {{one_for_all, 10, 3600},
          [ChSup, ?CHILD(emq_coap_server), ?CHILD(emq_coap_registry), listener_child(Listener, ChMFA)]}}.

listener_child(Port, ChMFA) ->
    {{coap_listener, coap},
      {esockd_udp, server, [coap, Port, [], ChMFA]},
        permanent, 5000, worker, [esockd_udp]}.

